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                   Red Hat Security Advisory

Synopsis:          Important: kernel security update
Advisory ID:       RHSA-2005:283-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2005-283.html
Issue date:        2005-04-28
Updated on:        2005-04-28
Product:           Red Hat Enterprise Linux
CVE Names:         CAN-2004-0619 CAN-2005-0384 CAN-2005-0449 CAN-2005-0750
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1. Summary:

Updated kernel packages are now available as part of ongoing support and
maintenance of Red Hat Enterprise Linux version 2.1. This is the seventh
regular update.

This security advisory has been rated as having important security impact
by the Red Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386

3. Problem description:

The Linux kernel handles the basic functions of the operating system.

This is the seventh regular kernel update to Red Hat Enterprise Linux 2.1

The following security updates were made:

A flaw in fragment queuing was discovered that affected the Linux 2.4 and
Linux 2.6 kernel netfilter subsystem. On systems configured to filter or
process network packets (for example those configured to do firewalling),
a remote attacker could send a carefully crafted set of fragmented packets
to a machine and cause a denial of service (system crash). In order to
sucessfully exploit this flaw, the attacker would need to know (or guess)
some aspects of the firewall ruleset in place on the target system to be
able to craft the right fragmented packets. (CAN-2005-0449)

A flaw was discovered in the Linux PPP driver. On systems allowing remote
users to connect to a server using ppp, a remote client could cause a
denial of service (system crash). (CAN-2005-0384)

A flaw was discovered in the bluetooth driver system. On system where the
bluetooth modules are loaded, a local user could use this flaw to gain
elevated (root) privileges. (CAN-2005-0750)

An integer overflow flaw was discovered in the ubsec_keysetup function
in the Broadcom 5820 cryptonet driver. On systems using this driver,
a local user could cause a denial of service (crash) or possibly gain
elevated privileges. (CAN-2004-0619) Please note that this update contains
an unpatched kernel module called bcm5820_old for backwards compatibility
which is still vulnerable to CAN-2004-0619. 

The following device drivers have been updated to new versions:

    mptfusion: 2.05.16 -> 2.05.16.02
    bcm5820: 1.17 -> 1.81
    cciss: 2.4.52 -> 2.4.54
    qla2x00: 6.04.01 -> 7.01.01

There were many bug fixes in various parts of the kernel. The ongoing
effort to resolve these problems has resulted in a marked improvement
in the reliability and scalability of Red Hat Enterprise Linux 2.1.

Bug fixes include:
    - Fixes an incorrect and ever-changing physical_id field in
      /proc/cpuinfo.
    - Now recognizes a particular e1000 device (PCI ID 8086:1014)
    - Fixes a panic in disk quota code
    - Fixes a bug in which msync(...MS_SYNC) returns before the data
      is written to disk
    - Adds new devices to the SCSI scan list so they can
      be initialized and handled properly: LSI ProFibre 4000R, HP
      HSV200/210, HP MSA, STK OPENstorage D178.
    - Fixes a potential format overflow in /proc/partitions
    - Restores module parameters to the e100 driver for compatibility with     
      existing customer scripts.
    - Fixes a bug in which cat'ing /proc/mdstat while adding/removing
      devices can cause a kernel oops

All Red Hat Enterprise Linux 2.1 users are advised to upgrade their
kernels to the packages associated with their machine architectures
and configurations as listed in this erratum.

Please note that a vulnerability addressed by this update (CAN-2005-0449)
required a change to the kernel module ABI which could cause third party
modules to not work. However, Red Hat is currently not aware of any module
that would be affected by this change.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  Use Red Hat
Network to download and update your packages.  To launch the Red Hat
Update Agent, use the following command:

    up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

    http://www.redhat.com/docs/manuals/enterprise

5. Bug IDs fixed (http://bugzilla.redhat.com/):

127256 - CAN-2004-0619 Broadcom 5820 integer overflow
147674 - physical_id field of /proc/cpuinfo contains arbitrary values that
 change
151803 - CAN-2005-0449 Possible remote Oops/firewall bypass
151242 - CAN-2005-0384 pppd remote DoS
152179 - CAN-2005-0750 bluetooth security flaw

6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/kernel-2.4.9-e.62.src.rpm
8bcec230f8895b907a6300626ced0dbf  kernel-2.4.9-e.62.src.rpm

i386:
7fa5f91dac379821e1cb6413b5db02ff  kernel-2.4.9-e.62.athlon.rpm
41604091576bb1126154035d7c0ae45f  kernel-2.4.9-e.62.i686.rpm
ede93e1af6c884488268a4322840341d  kernel-BOOT-2.4.9-e.62.i386.rpm
cec5c68f2ce35d8d1e8021c0f29b6dca  kernel-debug-2.4.9-e.62.i686.rpm
f9e95fdbdd9a2fd3eb77d9b6106211b1  kernel-doc-2.4.9-e.62.i386.rpm
386b858e5f31f17b0c4e2fdc6dca5413  kernel-enterprise-2.4.9-e.62.i686.rpm
5207e13b01f6d7686f0f71fd97843a12  kernel-headers-2.4.9-e.62.i386.rpm
2f129c38c477f62e934936f6db7a65ba  kernel-smp-2.4.9-e.62.athlon.rpm
98bf1e315f5c2b3492dd2ffc83bbe974  kernel-smp-2.4.9-e.62.i686.rpm
e50286b5695891e5b6bd0b54d4ef8986  kernel-source-2.4.9-e.62.i386.rpm
52b00cd6af3f6c50840ea2787073a700  kernel-summit-2.4.9-e.62.i686.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/kernel-2.4.9-e.62.src.rpm
8bcec230f8895b907a6300626ced0dbf  kernel-2.4.9-e.62.src.rpm

i386:
7fa5f91dac379821e1cb6413b5db02ff  kernel-2.4.9-e.62.athlon.rpm
41604091576bb1126154035d7c0ae45f  kernel-2.4.9-e.62.i686.rpm
ede93e1af6c884488268a4322840341d  kernel-BOOT-2.4.9-e.62.i386.rpm
cec5c68f2ce35d8d1e8021c0f29b6dca  kernel-debug-2.4.9-e.62.i686.rpm
f9e95fdbdd9a2fd3eb77d9b6106211b1  kernel-doc-2.4.9-e.62.i386.rpm
5207e13b01f6d7686f0f71fd97843a12  kernel-headers-2.4.9-e.62.i386.rpm
2f129c38c477f62e934936f6db7a65ba  kernel-smp-2.4.9-e.62.athlon.rpm
98bf1e315f5c2b3492dd2ffc83bbe974  kernel-smp-2.4.9-e.62.i686.rpm
e50286b5695891e5b6bd0b54d4ef8986  kernel-source-2.4.9-e.62.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/kernel-2.4.9-e.62.src.rpm
8bcec230f8895b907a6300626ced0dbf  kernel-2.4.9-e.62.src.rpm

i386:
7fa5f91dac379821e1cb6413b5db02ff  kernel-2.4.9-e.62.athlon.rpm
41604091576bb1126154035d7c0ae45f  kernel-2.4.9-e.62.i686.rpm
ede93e1af6c884488268a4322840341d  kernel-BOOT-2.4.9-e.62.i386.rpm
cec5c68f2ce35d8d1e8021c0f29b6dca  kernel-debug-2.4.9-e.62.i686.rpm
f9e95fdbdd9a2fd3eb77d9b6106211b1  kernel-doc-2.4.9-e.62.i386.rpm
386b858e5f31f17b0c4e2fdc6dca5413  kernel-enterprise-2.4.9-e.62.i686.rpm
5207e13b01f6d7686f0f71fd97843a12  kernel-headers-2.4.9-e.62.i386.rpm
2f129c38c477f62e934936f6db7a65ba  kernel-smp-2.4.9-e.62.athlon.rpm
98bf1e315f5c2b3492dd2ffc83bbe974  kernel-smp-2.4.9-e.62.i686.rpm
e50286b5695891e5b6bd0b54d4ef8986  kernel-source-2.4.9-e.62.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0619
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0384
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0449
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0750

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.

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